17
£¨´ð°¸£º0.877c£¬Óëx¡äÖáÖ®¼äµÄ¼Ð½ÇΪ46.83¡ã£©
18-9 Ò»Ìå»ýΪV0£¬ÖÊÁ¿Îªm0µÄÁ¢·½ÌåÑØÆäÒ»ÀâµÄ·½ÏòÏà¶ÔÓÚ¹Û²ìÕßAÒÔËÙ¶ÈvÔ˶¯£®Ç󣺹۲ìÕßA²âµÃÆäÃܶÈÊǶàÉÙ£¿
£¨´ð°¸£º
m0v2V0(1?2)c£©
18-11 °ëÈËÂíÐÇ×ù?ÐÇÊǾàÀëÌ«Ñôϵ×î½üµÄºãÐÇ£¬Ëü¾àÀëµØÇòS = 4.331016 m£®ÉèÓÐÒ»ÓîÖæ·É´¬×ÔµØÇò·Éµ½°ëÈËÂíÐÇ×ù?ÐÇ£¬ÈôÓîÖæ·É´¬Ïà¶ÔÓÚµØÇòµÄËÙ¶ÈΪv = 0.999 c£¬°´µØÇòÉϵÄʱÖÓ¼ÆËãÒªÓöàÉÙÄêʱ¼ä£¿ÈçÒÔ·É´¬ÉϵÄʱÖÓ¼ÆË㣬ËùÐèʱ¼äÓÖΪ¶àÉÙÄꣿ
18
£¨´ð°¸£º4.5 Ä꣬0.2 Ä꣩
18-16 Ò»µç×ÓÒÔv?0.99c (cÎªÕæ¿ÕÖйâËÙ)µÄËÙÂÊÔ˶¯£®ÊÔÇó£º (1) µç×ÓµÄ×ÜÄÜÁ¿ÊǶàÉÙ£¿
-(2) µç×ӵľµäÁ¦Ñ§µÄ¶¯ÄÜÓëÏà¶ÔÂÛ¶¯ÄÜÖ®±ÈÊǶàÉÙ£¿(µç×Ó¾²Ö¹ÖÊÁ¿me=9.1131031 kg)
£¨´ð°¸£º5.831013 J£»8.043102£©
--
18-17 ÒÑÖª??×ӵľ²Ö¹ÄÜÁ¿Îª 105.7 MeV£¬Æ½¾ùÊÙÃüΪ 2.23108 s£®ÊÔÇó¶¯ÄÜΪ 150 MeVµÄ??×ÓµÄËÙ¶ÈvÊǶàÉÙ£¿Æ½¾ùÊÙÃü??ÊǶàÉÙ£¿
-
19
£¨´ð°¸£º0.91c£»5.313108s£©
£
18-18 Ҫʹµç×ÓµÄËÙ¶È´Óv1 =1.23108 m/sÔö¼Óµ½v2 =2.43108 m/s±ØÐë¶ÔËü×÷¶àÉÙ¹¦£¿
-(µç×Ó¾²Ö¹ÖÊÁ¿me £½9.1131031 kg)
£¨´ð°¸£º4.7231014 J£©
-
µÚÊ®¾ÅÕ Á¿×ÓÎïÀí»ù´¡
19-1 ijºÚÌåÔÚ¼ÓÈȹý³ÌÖУ¬Æäµ¥É«·ø³ö¶ÈµÄ·åÖµ²¨³¤ÓÉ0.69 ?m±ä»¯µ½0.50
20